# Dissipative dynamics in isolated quantum spin chains after a local quench

@article{Wu2020DissipativeDI, title={Dissipative dynamics in isolated quantum spin chains after a local quench}, author={Yantao Wu}, journal={arXiv: Statistical Mechanics}, year={2020} }

We provide numerical evidence that after a local quench in an isolated infinite quantum spin chain, the quantum state locally relaxes to the ground state of the post-quenched Hamiltonian, i.e. dissipates. This is a consequence of the unitary quantum dynamics. A mechanism similar to the eigenstate thermalization hypothesis is shown to be responsible for the dissipation observed. We also demonstrate that integrability obstructs dissipation. The numerical simulations are done directly in the…

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